Accès membres

Mot de passe perdu? S'inscrire

11-06-2025 16:26

Jason Karakehian Jason Karakehian

Hi everyone, I am looking for the following protol

17-06-2025 12:10

Castillo Joseba Castillo Joseba

Del pasado dia 4  en bosque de hayas, en tierraA

17-06-2025 14:23

Josep Torres Josep Torres

Hello.A probable Hyaloscypha from last June 1st, s

12-03-2025 17:54

Karl Soler Kinnerbäck

Hi all!Do you agree with Scutellinia hyperborea? P

17-06-2025 12:02

Castillo Joseba Castillo Joseba

Del pasado sabado, en bosque de hayas y avellanos,

13-06-2025 09:41

Josep Torres Josep Torres

Hello.A cerebriform ascomycete sprouting scattered

13-06-2025 19:57

Castillo Joseba Castillo Joseba

De ayer en bosque de hayas y avellanosEjemplar uni

06-06-2025 12:12

Hans-Otto Baral Hans-Otto Baral

Dear all I want to ask you if you have any recent

01-06-2025 09:37

Charles Aron Charles Aron

Hi All, I found this Octospora growing with liver

15-06-2025 21:39

éric ROMERO éric ROMERO

Bonjour à tous, Espèce récoltée sur une tige

« < 1 2 3 4 5 > »
Unknown perithecia on Osmunda!
François Bartholomeeusen, 06-05-2024 10:02
Good morning,

At the end of an excursion in De Zegge Nature Reserve on April 25, 2024, I randomly took some old Osmunda stems for research.
At home I was able to identify Urceolella aspera, but with other ascomata on those stems my determination failed.
Irregularly shaped black spots were located in the vicinity of U. aspera. After the stems were soaked in water, those spots burst open slit-shaped and the hymenium was visible.

Asci: 45 x 8 µm, clavate, probably bitunate, no croziers, IKI + blue
(Pseudo) Parafysen: 42 x 1.8 µm, curled at the top and sometimes branched;
Spore: (7.5) 8.1 - 10.5 (11.1) × (2.4) 2.6 - 3.3 (3.4) µm; Me = 9.3 × 2.9 µm; Qe = 3.2; 
uninucleate, lacrymoid;
Textura peridium: globosa angularis.

Could the genus be Leptopeltis?
Any help is welcome,
Regards,

François
  • message #79188
  • message #79188
  • message #79188
  • message #79188
  • message #79188
  • message #79188
  • message #79188
  • message #79188
  • message #79188
François Bartholomeeusen, 08-05-2024 16:03
Re : Unknown perithecia on Osmunda!
I forgot to mention that I found generative hyphae up to 3.5 µm wide!
See attached photos (second in Congo Red)


  • message #79202
  • message #79202